Resolving dependencies...
Configuring mtl-2.2.1...
Building mtl-2.2.1...
Installed mtl-2.2.1
Configuring linearscan-0.10.1...
Building linearscan-0.10.1...
Failed to install linearscan-0.10.1
Build log ( /home/builder/.cabal/logs/linearscan-0.10.1.log ):
cabal: Entering directory '/tmp/cabal-tmp-6430/linearscan-0.10.1'
Configuring linearscan-0.10.1...
Building linearscan-0.10.1...
Preprocessing library linearscan-0.10.1...
[ 1 of 56] Compiling Hask.Utils       ( Hask/haskell/Hask/Utils.hs, dist/build/Hask/Utils.o )
[ 2 of 56] Compiling LinearScan.Ascii ( LinearScan/Ascii.hs, dist/build/LinearScan/Ascii.o )
[ 3 of 56] Compiling LinearScan.Context ( LinearScan/Context.hs, dist/build/LinearScan/Context.o )
[ 4 of 56] Compiling LinearScan.Datatypes ( LinearScan/Datatypes.hs, dist/build/LinearScan/Datatypes.o )
[ 5 of 56] Compiling LinearScan.Functor ( LinearScan/Functor.hs, dist/build/LinearScan/Functor.o )
[ 6 of 56] Compiling LinearScan.Applicative ( LinearScan/Applicative.hs, dist/build/LinearScan/Applicative.o )
[ 7 of 56] Compiling LinearScan.Const ( LinearScan/Const.hs, dist/build/LinearScan/Const.o )

LinearScan/Const.hs:16:1: error:
    Failed to load interface for ‘LinearScan.Contravariant’
    Use -v to see a list of the files searched for.
cabal: Leaving directory '/tmp/cabal-tmp-6430/linearscan-0.10.1'
cabal: Error: some packages failed to install:
linearscan-0.10.1 failed during the building phase. The exception was:
ExitFailure 1